How can you enable logging for your VPC network?

Enabling VPC flow logs is the correct approach for logging network traffic to and from VM instances within your Virtual Private Cloud (VPC) network. VPC flow logs provide detailed information about the traffic flowing through the VPC, which includes data such as the source and destination IP addresses, ports, protocols, and the amount of data that was processed.

When VPC flow logs are enabled, you can capture and analyze this information to monitor network performance, troubleshoot issues, and enhance security by auditing network activities. The logs can be exported to Cloud Logging for further analysis or for compliance purposes, allowing you to filter and query the logs to gain insights into the traffic patterns or potential security threats.

In contrast, other options do not directly provide VPC network logging in this specific context. While Cloud Functions can automate tasks, they do not contribute directly to network traffic logging. Stackdriver, now part of Google Cloud's operations suite, is more focused on monitoring and performance insights rather than specific logging for VPC traffic. The Network Service Tiers configuration relates to the levels of service for network performance and pricing but does not pertain to logging network traffic. Therefore, enabling VPC flow logs is the most relevant and effective method for logging within the VPC network